1999 Chriscraft 200 BR fuel tank question

Darkhorse1201

Petty Officer 2nd Class
Joined
Oct 17, 2005
Messages
108
I have a 1999 200br that I recently replaced the fuel gauge sending unit.
When I got to the fuel sender, there where 3 electrical lines - 2 hooked up (red and black) and one third green- not hooked up to anything.
Any idea what this is might be for?
 
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